{"title":"Suzuki RM400 Parts (1978–1980) – OEM, Aftermarket \u0026 Replacement Motocross Parts","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eSuzuki RM400 parts for RM400 are grouped here by year and sub-model for engine work, chassis service, and rider-quality motocross restoration. Browse OEM and aftermarket replacements built around the RM models enthusiasts still wrench on.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eThe RM400 replaced the RM370 as Suzuki's open-class MX weapon, delivering even more power from an improved two-stroke engine. Built for just three years before giving way to the RM465, these are now vintage racing favorites.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eOwners looking for Suzuki RM400 replacement parts often need top-end rebuild, carburetor jetting, fork seal and bushing replacement, and shock service. Whether you are doing routine maintenance, a full rebuild, or hunting down one hard-to-find part, accurate fitment by year and sub-model matters — and that is exactly how this collection is organized.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"mso-element: para-border-div; border: none; border-top: solid #C9C9C9 1.0pt; mso-border-top-alt: solid #C9C9C9 .5pt; padding: 1.0pt 0cm 0cm 0cm;\"\u003e\n\u003ch3 style=\"mso-pagination: widow-orphan; border: none; mso-border-top-alt: solid #C9C9C9 .5pt; padding: 0cm; mso-padding-alt: 1.0pt 0cm 0cm 0cm;\"\u003e\u003cspan lang=\"EN-US\"\u003eShop RM400 Parts – Built for Motocross Service, Rebuilds \u0026amp; Vintage Racing\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eOld Bike Barn brings together Suzuki RM400 replacement parts for rebuilds, race-prep service, and long-term motocross restoration work. That gives riders a more focused way to shop the engine, suspension, chassis, brake, and control parts that keep an RM project moving.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eEven when one Suzuki RM400 looks close to another, pistons, seals, fork components, brake hardware, and bodywork may not cross over as cleanly as expected. Year-specific fitment keeps the search tighter and the parts list more useful.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"mso-element: para-border-div; border: none; border-top: solid #C9C9C9 1.0pt; mso-border-top-alt: solid #C9C9C9 .5pt; padding: 1.0pt 0cm 0cm 0cm;\"\u003e\n\u003ch3 style=\"mso-pagination: widow-orphan; border: none; mso-border-top-alt: solid #C9C9C9 .5pt; padding: 0cm; mso-padding-alt: 1.0pt 0cm 0cm 0cm;\"\u003e\u003cspan lang=\"EN-US\"\u003eWhy Riders Trust Old Bike Barn for RM400 Parts\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003eKeeping an older Suzuki motocross bike together often means sorting through wear, race-day repairs, and the small fitment differences that matter once the work begins. The right Suzuki RM400 replacement parts depend on accurate fitment information and a catalog that reflects the maintenance and repair jobs these bikes actually see. Old Bike Barn makes that easier with OEM and aftermarket RM400 parts organized for upkeep, fixes, and long-term off-road ownership.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-end=\"3008\" data-start=\"3005\"\u003e\n\u003ch3\u003eBuilding a Custom RM400?\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"93\" data-end=\"313\"\u003eSome parts on a custom build are not model-specific. If you’re changing handlebars, mirrors, lighting, controls, shocks, exhaust pieces, fuel line, or hardware, visit our universal and custom motorcycle parts collection.\u003c\/p\u003e\n\u003cp data-start=\"315\" data-end=\"580\"\u003eThese parts are useful for cafe racers, brat builds, trackers, choppers, and garage-built vintage motorcycles, but they are not guaranteed to fit every bike without checking. Always compare measurements, mounting style, clearance, and product notes before ordering.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\" data-start=\"582\" data-end=\"626\"\u003e\u003ca title=\"Custom \/ Universal Motorcycle Parts Collection\" href=\"https:\/\/oldbikebarn.com\/collections\/universal-custom-motorcycle-parts\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong data-start=\"582\" data-end=\"626\"\u003eShop Universal \u0026amp; Custom Motorcycle Parts\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/h3\u003e","products":[{"product_id":"rm400-steering-bearing-kit-28-2003","title":"79-80 RM400 \/ 77-83 XS400 \/ 76 XS360 Steering Bearing Kit","description":"\u003cp\u003eSSY-125 Tapered Roller Steering Bearing Conversion Kit.\u003c\/p\u003e\u003cp\u003eSuperior to OEM quality, 10X the contact area and less flex. Designed as a drop in replacement for the original bearing. Kit is complete with upper and lower tapered bearing races.\u003c\/p\u003e\u003cp\u003eHigh quality made in Japan\u003c\/p\u003e\u003cp\u003eThis replacement component supports dependable performance and reliable service life.\u003c\/p\u003e\u003cp\u003eFits: Yamaha FJ600 (1984-1985)\u003cbr\u003eYX600 (1986-1987, 1991)\u003cbr\u003eXJ550 (1981-1983)\u003cbr\u003eXV535 (1987-1990, 1993-1994)\u003cbr\u003eXV500 (1983-1985)\u003cbr\u003eRD400 (1976-1978)\u003cbr\u003eRM400 (1979-1980)\u003cbr\u003eXS400 (1977-1983)\u003cbr\u003eXS360 (1976)\u003cbr\u003eRD350 (1973-1975)\u003cbr\u003eRZ350 (1981-1989)\u003cbr\u003eRD250 (1974-1976)\u003cbr\u003eRM250 (1979-1980)\u003cbr\u003eSR250 (1980-1982)\u003cbr\u003eTZR250 (1987-1988)\u003cbr\u003eXV250 (1988-1990, 1994)\u003cbr\u003eYTM225DR (1985-1986)\u003cbr\u003eYTM225DX (1984-1985)\u003cbr\u003eYTM200 (1984-1986)\u003cbr\u003eRM125 (1979-1980)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251556659355,"sku":"28-2003","price":42.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/28-2003_59b86b6b-2b20-4df8-8ee0-9d5a88294d5d.jpg?v=1775355941"},{"product_id":"rm400-swing-arm-needle-bearing-set-2-22-x-29-x-20-28-1019","title":"78 RM400 \/ 80 SP400 \/ 77-79 YZ400 Swing Arm Needle Bearing Set\/2 - 22 x 29 x 20","description":"\u003cp\u003eSwing Arm Needle Bearing Set\/2\u003c\/p\u003e\u003cp\u003eSuper high quality made in Japan - 22 x 29 x 20 Size\u003c\/p\u003e\u003cp\u003eYamaha YZ125 (1978-81)\u003c\/p\u003e\u003cp\u003eThis replacement component supports dependable performance and reliable service life.\u003c\/p\u003e\u003cp\u003eFits: Suzuki DR800S (1990)\u003cbr\u003eVS800 (1992-1997)\u003cbr\u003eDR750S (1988-1989)\u003cbr\u003eVS750 (1985-1991)\u003cbr\u003eDR650S (1990-1995)\u003cbr\u003eGS650M (1983)\u003cbr\u003eSP500 (1981-1983)\u003cbr\u003eIT465 (1981-1982)\u003cbr\u003eYZ465 (1980-1981)\u003cbr\u003eIT425 (1980)\u003cbr\u003eDR400 (1980)\u003cbr\u003eIT400 (1977-1979)\u003cbr\u003eRM400 (1978)\u003cbr\u003eSP400 (1980)\u003cbr\u003eYZ400 (1977-1979)\u003cbr\u003eDR370 (1978-1979)\u003cbr\u003eIT250 (1977-1982)\u003cbr\u003eYZ250 (1977-1981)\u003cbr\u003eIT175 (1980-1981)\u003cbr\u003eYZ125 (1978-1981)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251563278491,"sku":"28-1019","price":10.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/28-1019_d5b12a7c-c2d0-494e-b51f-a6b1515345b9.jpg?v=1775356155"},{"product_id":"gs400x-steel-clutch-plate-39-1422","title":"77-78 GS400X \/ 78-80 RM400 \/ 71-75 TM400 Steel Clutch Plate","description":"\u003cp\u003eSteel Clutch Plate 8 Pieces Required Replaces OEM# 21451-31000\u003c\/p\u003e\u003cp\u003eThis clutch component supports smooth engagement and dependable drivetrain performance.\u003c\/p\u003e\u003cp\u003eFits: Suzuki GS850G (1979-1983)\u003cbr\u003eGS850GL (1980-1983)\u003cbr\u003eGS750E (1980-1983)\u003cbr\u003eGS750ES (1983)\u003cbr\u003eGS750L (1980-1981)\u003cbr\u003eGS750S (1983)\u003cbr\u003eGS750T (1982-1983)\u003cbr\u003eGT750 (1972-1977)\u003cbr\u003eGS700E (1985)\u003cbr\u003eGS700ES (1985)\u003cbr\u003eGV700GL (1985)\u003cbr\u003eGS650E (1981-1982)\u003cbr\u003eGS650G (1981-1983)\u003cbr\u003eGS650GL (1981-1983)\u003cbr\u003eGS650M (1983)\u003cbr\u003eGS550E (1983)\u003cbr\u003eGS550EF (1983-1986)\u003cbr\u003eGS550ES (1983)\u003cbr\u003eGS550ESE (1983-1986)\u003cbr\u003eGS550ESF (1983-1985)\u003cbr\u003eGS550ESG (1983-1986)\u003cbr\u003eGS550L (1983, 1985-1986)\u003cbr\u003eGT500 (1976-1977)\u003cbr\u003eLT500RL (1987-1990)\u003cbr\u003eT500 (1968-1975)\u003cbr\u003eGS425E (1979)\u003cbr\u003eGS425L (1979)\u003cbr\u003eGS400X (1977-1978)\u003cbr\u003eRM400 (1978-1980)\u003cbr\u003eTM400 (1971-1975)\u003cbr\u003eTS400 (1972-1977)\u003cbr\u003eGT380 (1972-1977)\u003cbr\u003eRM370 (1976-1977)\u003cbr\u003eSP370 (1978-1979)\u003cbr\u003eT350J (1969-1972)\u003cbr\u003eT350R (1969-1972)\u003cbr\u003eTC305 (1969)\u003cbr\u003eGT250 (1973-1977)\u003cbr\u003eLT250R (1985-1992)\u003cbr\u003eRM250 (1976-1988)\u003cbr\u003eTM250 (1972-1975)\u003cbr\u003eTS250 (1969-1980)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251809038491,"sku":"39-1422","price":5.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/39-1422E_fb765931-48a1-43dd-b898-d89f76d39d58.jpg?v=1775359724"},{"product_id":"rm400-rear-friction-shoes-29-3318","title":"1979-1980 RM400 \/ 1979-1980 RM250 Rear Friction Shoes","description":"\u003cp\u003eRear Brake Shoes Pk\/2 Diameter: 138.8mm Width: 28mm OEM Ref # 64410-40300\u003c\/p\u003e\u003cp\u003eThis replacement component supports dependable performance and reliable service life.\u003c\/p\u003e\u003cp\u003eFits: Suzuki RM400 (1979-1980)\u003cbr\u003eRM250 (1979-1980)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251831517339,"sku":"29-3318","price":25.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/29-3318.jpg?v=1775361192"},{"product_id":"pe400-rear-friction-shoes-29-3309","title":"80-81 PE400 \/ 78-80 RM400 \/ 80 SP400 Rear Friction Shoes","description":"\u003cp\u003eRear Brake Shoes Pk\/2 Diameter: 148mm Width: 28mm OEM Ref # 54410-37200\u003c\/p\u003e\u003cp\u003eThis replacement component supports dependable performance and reliable service life.\u003c\/p\u003e\u003cp\u003eFits: Suzuki DR500 (1981-1983)\u003cbr\u003eSP500 (1981-1983)\u003cbr\u003eDR400T (1980)\u003cbr\u003ePE400 (1980-1981)\u003cbr\u003eRM400 (1978-1980)\u003cbr\u003eSP400 (1980)\u003cbr\u003eTS400 (1972-1977)\u003cbr\u003eDR370 (1978-1979)\u003cbr\u003eRM370 (1976-1977)\u003cbr\u003eSP370 (1978-1980)\u003cbr\u003eDS250 (1980)\u003cbr\u003ePE250 (1977-1981)\u003cbr\u003eRM250 (1976-1980)\u003cbr\u003eRS250 (1980-1981)\u003cbr\u003eTS250 (1971-1981)\u003cbr\u003eLT230GE (1985-1986)\u003cbr\u003eALT185 (1984-1985)\u003cbr\u003eLT185 (1984-1987)\u003cbr\u003eLT160E (1989-1992)\u003cbr\u003eLTF160 (1991-2001)\u003cbr\u003eALT125 (1984-1986)\u003cbr\u003eLT125 (1984-1987)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251831812251,"sku":"29-3309","price":18.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/29-3309B_704df422-cb04-4ea8-8cc1-c80956354af2.jpg?v=1775361216"},{"product_id":"rm400-fork-seal-set-2-38-x-50-x-10-5-27-1018","title":"79-80 RM400 \/ 77-79 YZ400 \/ 81-82 IT250 Fork Seal Set\/2 - 38 x 50 x 10.5","description":"\u003cp\u003eFork Seals Pk\/2 38 x 50 x 10.5\u003c\/p\u003e\u003cp\u003eThis suspension component supports stable handling and dependable ride control.\u003c\/p\u003e\u003cp\u003eFits: Kawasaki KZ1000C (1978-1981)\u003cbr\u003eFZX750 (1986-1987)\u003cbr\u003eFZX700 (1986-1987)\u003cbr\u003eKL650A (1987-2006)\u003cbr\u003eKL650B (1990-1991)\u003cbr\u003eKL600A (1984-1986)\u003cbr\u003eXT550 (1982-1983)\u003cbr\u003eIT465 (1981-1982)\u003cbr\u003eKDX450 (1982)\u003cbr\u003eKDX420 (1981)\u003cbr\u003eKX420 (1980-1981)\u003cbr\u003eKDX400 (1979-1980)\u003cbr\u003eRM400 (1979-1980)\u003cbr\u003eYZ400 (1977-1979)\u003cbr\u003eIT250 (1981-1982)\u003cbr\u003eKDX250 (1980-1984)\u003cbr\u003eKX250 (1979-1981)\u003cbr\u003eRM250 (1979-1982)\u003cbr\u003eTDR250 (1989-1990)\u003cbr\u003eXR250R (1984-1985)\u003cbr\u003eYZ250 (1977-1980)\u003cbr\u003eKDX200 (1983-1985)\u003cbr\u003eIT175 (1982-1983)\u003cbr\u003ePE175 (1982-1984)\u003cbr\u003eCR125R (1981-1983)\u003cbr\u003eKX125 (1980-1981)\u003cbr\u003eRM125 (1979-1983)\u003cbr\u003eYZ125 (1981-1983)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251861926043,"sku":"27-1018","price":11.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/27-1018_b47edfdd-29a8-40e4-8413-328891a2d78d.jpg?v=1775362565"},{"product_id":"rm400-kickstart-lever-19-0060","title":"79-80 RM400 \/ 80-82 PE250 \/ 79-83 RM250 Kickstart Lever","description":"\u003cp\u003eKickstart Lever 20MM Coarse Spline OEM Ref # 26300-14100 \/ 26300-14200 \/ 26300-201 \/ 26300-14100 \/ 26300-40400 \/ 26300-40401 \/ 26300-14300 \/ 26300-14310 \/ 26300-14X00\u003c\/p\u003e\u003cp\u003eThis replacement component supports dependable performance and reliable service life.\u003c\/p\u003e\u003cp\u003eFits: Suzuki RM500 (1983-1985)\u003cbr\u003eRM465 (1981-1982)\u003cbr\u003ePE400 (1980-1982)\u003cbr\u003eRM400 (1979-1980)\u003cbr\u003ePE250 (1980-1982)\u003cbr\u003eRM250 (1979-1983)\u003cbr\u003eRS250 (1980-1981)\u003cbr\u003ePE175 (1980-1984)\u003cbr\u003eRS175 (1981-1982)\u003cbr\u003eRM125 (1980-1983)\u003cbr\u003eRM100 (1979-1981)\u003c\/p\u003e","brand":"Discount Fedex","offers":[{"title":"Default Title","offer_id":48251902787739,"sku":"19-0060","price":27.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0215\/9889\/6228\/files\/19-0060_fc9a2f8f-b940-41a1-8d19-17d1d8a7de39.jpg?v=1775363881"}],"url":"https:\/\/oldbikebarn.com\/de\/collections\/suzuki-rm400-parts.oembed","provider":"Old Bike Barn","version":"1.0","type":"link"}